EP 0024087 B1 19850123 - DEVICE WITH PAIRED ROTATORS ACTING AS A PUMP OR AS A FLUID MOTOR
Title (en)
DEVICE WITH PAIRED ROTATORS ACTING AS A PUMP OR AS A FLUID MOTOR
Publication
Application
Priority
US 1384479 A 19790222
Abstract (en)
[origin: WO8001785A1] The fluid-power converter is a pump-motor having matched rollers (31, 34) and matched gears (21, 28) arranged to provide rolling seals and displacement path. The pump-motor includes a plurality of rotators in series-contact to define a plurality of fluid-pressure zones (37, 38). At least one of the rotators has a smooth surface and at least another of the rotators has a gear-like surface. A smooth rotator and a gear-like rotator are in contact with each other to define therebetween a displacement path (41) whereby fluid is transferred from one zone to another zone, and at least one pair of similar rotators are in contact with each other to provide therebetween (and between the pressure zones) a rolling seal (40) to insure fluid-flow in only one direction between the zones at a given moment. A pair of the converters, one operating as a pump and the other as a motor, provide the motive power with free-wheeling and coaster-brake features for small vehicles such as bicycles, wheelchairs, and golf carts.
IPC 1-7
IPC 8 full level
B62M 1/06 (2006.01); B62M 19/00 (2006.01); F01C 1/08 (2006.01); F01C 1/10 (2006.01); F04C 2/18 (2006.01)
CPC (source: EP US)
B62M 19/00 (2013.01 - EP US); F04C 2/18 (2013.01 - EP US)
Designated contracting state (EPC)
AT CH DE FR GB NL SE
DOCDB simple family (publication)
WO 8001785 A1 19800904; AT E11388 T1 19850215; DE 3069993 D1 19850307; EP 0024087 A1 19810225; EP 0024087 A4 19811027; EP 0024087 B1 19850123; US 4249750 A 19810210
DOCDB simple family (application)
US 8000171 W 19800221; AT 80900482 T 19800221; DE 3069993 T 19800221; EP 80900482 A 19800910; US 1384479 A 19790222